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2012 LZ1
is a near-Earth asteroid about in diameter that passed within 5.4 million kilometers (14 lunar distances) of Earth on June 14, 2012. It was discovered during the night of June 10–11, 2012 by astronomer Robert H. McNaught and his colleagues at the Siding Spring Observatory in Australia, just four days before its closest approach to Earth. Because of 's size and proximity it is classified as a "potentially hazardous" near-Earth asteroid.〔
==Overview==
Arecibo radar observations on June 19, 2012 have shown that is about in diameter and that has zero chance of impacting the Earth for at least the next 750 years.〔
A small change of trajectory caused by Earth's gravity was predicted from the 2012 passby.〔 The Slooh Space Camera streamed live footage of the passby over the Internet.〔 McNaught and Astronomy magazine columnist Bob Berman hosted the broadcast.〔 "We love it when stuff like this happens, because it's fun to do and the public appreciates it," said Slooh president Patrick Paolucci.〔 The asteroid was the same brightness as a 13th-magnitude star, too faint to be seen by the naked eye or a low-end telescope.〔
The next passby for will be July 27, 2016 at from Earth.〔〔(【引用サイトリンク】publisher=NEODyS (Near Earth Objects - Dynamic Site) )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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